Acid-valve.



PATBNTED 00T.` s, 190e'.

J.- KOCH. ACID VALVE.. APBLIOA'JEION FILED HOY. 18.1901.

ur lllllll nlll L UNITED STATES n PATENT Patented October 6, 1903.

Fries.

ACID-VALVE.

` SPECIFICATION forming part of Letters Patent No. 740,762, dated October 6, 1903.

nppnanon fua Novi-.mbar 1s, 1901. sain no. 82,312. (no man.;

.To wl whom, tV may concern:

Be it known that I, lJOHN KOCH, a citizen of Germany, residing at 1West Berkeley,V in the county of Alameda and State of California, have invented certain new and useful Improvements in Acid-Valves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates in a general way to that class of devices known in' the art as stop-cocks; but to be more specific it is an improved valveA to be used inthe manipulation of acids or acid products.

To cope with the destructive action of the acids in and about acid-works or establishments where acid is largely used, the valves generally employed are made of stone; but this material, although successfully resisting the acid, has manifest objections in the matter of ready liability to fracture and consequent expense, besides the loss of valuable time in attending to the constant inspection .and replacing of the valves.

New to overcome the above objections and y provide a valve having the requisites of strength and durability and which will be es Figure l is a side elevation of the complete valve. Fig. 2 is a top view of the valve. Fig.

- 3 is a vertical central section of the device,

taken on the linewof Fig. 2. Fig. t isatransverse section taken on the line y y of Fig. l.

I will now explain the construction of the several parts of my invention and subsequently set forth the operation of the same,v it being understood that the entire device,

with the exception of such parts as are otherwise specified, is formed of lead.

The main body of the valve consists of the hollow cylindrical base A, the upper portion of which is formed with the ange ai, while entering its lower end are the inlet and outlet pipes B and C, respectively, the former being formed with an upturned leg h. Adapted to slide snugly in this base A is the inverted-cup-shaped member D,termin ating at its upper end inthe hollow neck E. Protruding through this neck E is the stein F, which is swivelly connected to the iron block G by means of the iron arched piece I-I. The small iron screw d is provided to hold the block G firmly against the top e of the cup-shaped member D; but even the head of this screw is covered with lead to protect it from the destructive action of the acid.

From thel description so far gone into it will be seen that, assuming that the base A is stationary'and the cup-shaped member D moved downward or upward, the top e will close or open the mouth of the leg h, thereby allowing or preventing-the iiow of the acid. This reciprocation of the member D is accomplished through the medium of the siem F, which is threaded through the iron yoke I.

It will be noted that as the acid iiows from the leg h it will strike against the top e and be diverted downward toward the mouth of the pipe Og but to provide against cases where -the head of acid might be sufficient to cause the latter to tind its way about the neck E, I have encircled the neckwith the conical vdome J. Between the dome J and yoke I is lthe seat M, which insures against the escape of acid when the valve is open. The flange a on member A is separated from a similarlyformed flange fon dome J by means of the rubber washer g, while by means of the iron flange h, formed integral with yoke l, and in conjunction with the iron washer i and bolts K a rigid method of uniting the soft leaden members of the valve is provided.

From the above description it will be noted that the parts of the device subjected to constant wear and strain are formed of iron or otherv metal capable of 1 withstanding such usage, while the remaining parts of the valve, which come immediately in contact with the acid, are formed of lead, and as the latter inetal is noted for its freedom froin'chemical action with most of the acids the efficiency and durability of the valve is assured. 4

I am aware that changes in the form and proportion of parts of the devices herein shown and described as an embodiment of my invention can be made without depart- IOO ing from the spirit or sacrificing the advan- Jrages thereof, and I therefore reserve the right to make such changes and alterations as fairly fall within the scope of my invention.

What I claim, and desire to secure by Letters Patent, is-

An acid-valve consisting of a main body having an inlet and an outlet pipe, a cupshaped member slidable in said body and adapted to open or close one of said pipes, a stem attached to and adapted to operate said member, a secondary cup-shaped member above said other member and encircling said stem and secured to said body, and a seat above said member to prevent escape of acid JOHNV KOCH.

Witnesses:

GEORGE PATTIsoN, ELIZ. KINCAID. 

